为什么我的价格在更新后变成了 RM0.00？

Question

This is my front-end code

I have tried to change from double to float and char but same thing happen. Even when I update quantity, the price part change to 0.00. How to fix this issue?

<td><asp:Label ID="lblPPrice" runat="server" Text='<%# Eval("PPrice","{0:c}")
 %>' ></asp:Label>
            <asp:TextBox ID="txtPPrice" runat="server" Text='<%# Eval("PPrice","
 {0:c}") %>' Visible="false"></asp:TextBox> </td>

             <td><asp:Label ID="lblPSelPrice" runat="server" Text='<%#
 Eval("PSelPrice","{0:c}") %>' ></asp:Label>
            <asp:TextBox ID="txtPSelPrice" runat="server" Text='<%#
 Eval("PSelPrice","{0:c}") %>' Visible="false"></asp:TextBox> </td>

This is my code behind

cmd.Parameters.AddWithValue("@PPrice", SqlDbType.NVarChar).Value =
double.TryParse(productPrice, out money);
           cmd.Parameters.AddWithValue("@PSelPrice", SqlDbType.NVarChar).Value=
double.TryParse(productSelPrice, out money);

Answer 1

TryParse method returns bool value. Try assigning money variable.

if(double.TryParse(productPrice, out money))
{
   cmd.Parameters.AddWithValue("@PPrice", SqlDbType.NVarChar).Value = money;
}